** Disable Driver Signature Enforcement before installation.
** Download all the parts, extract it to a single folder and install the driver.
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** Download the Original and the Modded Files according to the OS (32 bit / 64 bit) and just replace the Folder named "Packages" in the original Driver with this folder "packages" from the modded driver (.rar).

Well you can use Bench Marking software like 3DMark, Aquamark, Lightsmark, Furmark, etc.

Or you can use a lay method for general testing in games like Sleeping Dogs, SS4, and many other games provide internal benchmark options where you can do bench marks to see differences.

else you can use any FPS Counter software in a game to see the difference when playing the game. Many game like Battle Field provides the command line option to enable FPS showing which can be handy.

OR you can use Radeon Pro, which can hook onto d3d9 and d3d10 games to show you the FPS count while playing....

Remember.., make sure all settings in CCC and games are same while performing tests with different Drivers.

I will use the fps test in css.

Device manager doesn't want to update the generic driver. I installed the inf by myself, is that ok?

edit2 : I did some group policy trick to prevent windows from installing the generic driver, then I chose the modded driver folder and before clicking on "next" I disabled the policy and windows installed the new driver.

edit2 : I did some group policy trick to prevent windows from installing the generic driver, then I chose the modded driver folder and before clicking on "next" I disabled the policy and windows installed the new driver.

So I tried your solution:
I have got six folders that start with ati @ c:\windows\system32\DriverStore\FileRepository.
The next problem is that I cant change folder name, Windows wont let me (UAC is disabled and I'm admin).

I have two files that start with ati @ c:\windows\inf\
I renamed those.

Still not working. Windows isn't installing some old Ati driver after restart automatically anyway because I did the same thing trocio2 did ( group policy trick).

So I tried your solution:
I have got six folders that start with ati @ c:\windows\system32\DriverStore\FileRepository.
The next problem is that I cant change folder name, Windows wont let me (UAC is disabled and I'm admin).

I have two files that start with ati @ c:\windows\inf\
I renamed those.

Still not working. Windows isn't installing some old Ati driver after restart automatically anyway because I did the same thing trocio2 did ( group policy trick).

Look. The new inf should be in Windows database (you can add it manually), like this:

If you cant change a file name in system32 you need are lacking privileges.

Hi all! Thx for the driver ankinferno!!! It really flies! I've installed it manually as installer didn't show me any driver to install. But it works correctly only if I restart my laptop into "driver signing off" mode. Anything I can do about it? Maybe I've chosen the wrong file? There are C7.... C8... and CH... I don't know if it matters which one you choose. Either way my m3650 feels more lively now Thx again!

SMALL UPDATE:
Driver loads properly if system is shut down from "signed drivers off" mode but when you restart Windows you will end up with vga driver.

Hi all! Thx for the driver ankinferno!!! It really flies! I've installed it manually as installer didn't show me any driver to install. But it works correctly only if I restart my laptop into "driver signing off" mode. Anything I can do about it? Maybe I've chosen the wrong file? There are C7.... C8... and CH... I don't know if it matters which one you choose. Either way my m3650 feels more lively now Thx again!

SMALL UPDATE:
Driver loads properly if system is shut down from "signed drivers off" mode but when you restart Windows you will end up with vga driver.

Try to run the following commands in a Command Prompt as Administrator